The underground is the most complex construction environment imaginable. For over 100 years, Moretrench has pioneered some of the industry’s most important advancements, and that spirit of leadership has driven the company ever since.
Deep foundations may be used where new, heavily loaded structures are built, where poor bearing soils are present at shallow depth, existing shallow foundations are subject to increased loading, or structures are subject to uplift forces or seismic loading. Moretrench offers a variety of deep foundation options to meet project design and construction requirements including standard micropiles, hollow bar micropiles, auger cast piles, drilled displacement piles, drilled shafts, and helical piles.
Construction dewatering, the temporary lowering of the groundwater, has been practiced by Moretrench for more than 90 years and the company is recognized as an industry leader and an innovator in the field. Methods include deep wells, wellpoints, and ejectors. Under some circumstances, artificial recharge can be used to minimize the potential side effects of excessive groundwater lowering during construction.
Groundwater control can also be provided by the installation of subsurface barrier walls or by ground modification methods. In addition to construction applications, groundwater control methods can be used for environmental containment and structural seepage control or for stabilization of waste products such as coal combustion residuals.
Temporary earth retention for excavation support may be the first stage of construction. Traditional techniques such as steel sheet piling or tied back soldier beam and lagging walls can be a very economical. However, not all sites are amenable to the vibration of driving sheet piling, the interference of underground utilities or other structures. This is particularly true in urban environments. Soil nailing, grouting systems or ground freezing can be viable alternatives to traditional earth retention. Because Moretrench is experienced in all of these techniques, we can offer the optimum solution tailored to project requirements and subsurface conditions and restraints.
The presence of contaminants continues to pose a significant challenge on chemical, industrial, municipal, landfill and civil sites across the country. Moretrench provides a range of environmental remediation services customized to the contaminant(s) and the approach to remediation or containment. These fall under the following general categories:
- Groundwater recovery and treatment
- Barrier techniques (cut-off and exclusion)
- Landfill gas and leachate systems
- Contaminated soil excavation and disposal
Artificial ground freezing for groundwater control and excavation support has been practiced in construction for more than a century. The technique is cost-effective in a relatively well-defined niche where both support of excavation and groundwater cut-off are required, and it is performed at significant depth or in difficult, disturbed, or sensitive ground. Moretrench has been the North American industry leader in this highly specialized technology since 1976.
From sinkhole remediation to the mitigation of liquefaction potential, the field of grouting encompasses a diverse range of subsurface conditions and an equally diverse range of treatment methodologies. Grouting can be performed for a wide range of applications, including underpinning, water cut-off, excavation support, utility support, soil or slope stabilization, or hazardous waste containment. Moretrench’s grouting expertise includes jet, permeation, compaction, fracture, compensation, rock curtain, and structural seepage grouting. With more tools in the toolbox, state-of-the art equipment and in-depth expertise, Moretrench has the capability to handle any grouting project from emergency response water control grouting to large-scale foundation soil treatment.
Underpinning may be required to provide the additional foundation support needed to withstand increased loading, to halt ongoing settlement, to underpin existing shallow foundations prior to adjacent new construction, and for seismic retrofit. Moretrench offers several methods of structural underpinning including the conventional concrete pit method, micropiles, soil nailing and bracket piles. Ground modification methods of underpinning may include ground freezing, and permeation and jet grouting.
Moretrench undertakes industrial construction projects, both as a general contractor and a subcontractor, from its locations in Riverview, FL, and Gonzales, LA. A significant portion of the company’s business is focused around the specialized needs of the region’s power, mining and manufacturing industries. Primary among these are phosphate fertilizer plants, phosphate and non-phosphate mining operations, power plants, chemical plants, food processing and manufacturing plants, and the citrus industry. Moretrench’s broad range of capabilities allows industrial clients to single-source many of the services they require.
In addition to comprehensive general industry health and safety training, the company ensures that its workforce is current in the specialized and project-specific health and safety requirements of these industries. A 24-hour emergency response network, maintained on standby alert, ensures rapid response and assistance to industrial and power company clients in maintaining critical round-the-clock operations.